If you can't read PDF documents on this site, you probably don't have Adobe Acrobat Reader installed on your computer.
You can download it for free here.
If you want to download the PDF files rather than read them in Acrobat Reader on the screen, use
the [download] links . If you have problems, such as the file still opening in Acrobat Reader, please (a) right-click
your mouse on the link and select "save as" (Windows users) or (b) hold down the Alt (or Option) key while you click
on the link (Macintosh users). The file should then download to your hard disk.